Created: 2013-12-27 15:50:45
Modified: 2014-02-03 14:04:02
DESCRIPTION OF AREA CONTAINING SITE:
Happy Valley grid is located on the Unglaciated foothills. Landcover units include Tussock-graminoid, dwarf- shrub tundra and low-shrub tundra (moist acidic). U9a 1-ha grid located within U9B 1-km grid.
SAMPLING DESIGN AND METHOD:
1 ha grid consists of a square array of surveyed permanent stakes separated by 10 m, yielding an 11 × 11 array of sampling nodes on each grid. Thaw depth and snow sampling was conducted twice by manual probing at each stake. The two values for each sampling point are averaged, yielding a maximum of 121 data points per grid per probing date. The active layer was not measured at locations where grid points intersect rocks or deep water.
Only thaw depth data determined by mechanical probing is reported on CALM website. For additional data refer to http://www.gi.alaska.edu/snowice/Permafrost-lab/index.html or contact site investigators directly
CALM USA UAF
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